i5-11400T vs i7-6660U

Primary details

Comparing Core i7-6660U and Core i5-11400T processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	1791	854
Place by popularity	not in top-100	not in top-100
Cost-effectiveness evaluation	no data	26.70
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Architecture codename	Skylake (2015−2016)	Rocket Lake (2021)
Release date	20 March 2016 (8 years ago)	16 March 2021 (3 years ago)
Launch price (MSRP)	$415	$182

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Core i7-6660U and Core i5-11400T basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	6 (Hexa-Core)
Threads	4	12
Base clock speed	2.4 GHz	1.3 GHz
Boost clock speed	3.4 GHz	3.7 GHz
Bus type	OPI	no data
Bus rate	4 GT/s	8 GT/s
Multiplier	24	no data
L1 cache	128 KB	480 KB
L2 cache	512 KB	3 MB
L3 cache	4 MB	12 MB
Chip lithography	14 nm	14 nm
Die size	no data	276 mm2
Maximum core temperature	100 °C	100 °C
Maximum case temperature (TCase)	no data	72 °C
64 bit support	+	+
Windows 11 compatibility	-	+

Compatibility

Information on Core i7-6660U and Core i5-11400T compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	1
Socket	FCBGA1356	FCLGA1200
Power consumption (TDP)	15 Watt	35 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-6660U and Core i5-11400T. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512
AES-NI	+	+
AVX	+	+
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
eDRAM	64 MB	no data
My WiFi	+	no data
Turbo Boost Technology	2.0	2.0
Hyper-Threading Technology	+	+
TSX	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	no data
SIPP	+	-
Smart Response	+	no data
Turbo Boost Max 3.0	no data	-
Status	Discontinued	Discontinued
Deep Learning Boost	-	+

Security technologies

Core i7-6660U and Core i5-11400T technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+
Secure Key	+	+
MPX	+	-
Identity Protection	+	+
SGX	Yes with Intel® ME	-
OS Guard	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-6660U and Core i5-11400T are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-6660U and Core i5-11400T. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR4-2133, LPDDR3-1866, DDR3L-1600	DDR4
Maximum memory size	32 GB	128 GB
Max memory channels	2	2
Maximum memory bandwidth	34.134 GB/s	50 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card Compare	Intel Iris Graphics 540	Intel UHD Graphics 730
Max video memory	32 GB	64 GB
Quick Sync Video	+	+
Clear Video	+	+
Clear Video HD	+	+
Graphics max frequency	1.05 GHz	1.2 GHz
Execution Units	no data	24
InTru 3D	+	+

Graphics interfaces

Available interfaces and connections of Core i7-6660U and Core i5-11400T integrated GPUs.

Number of displays supported	3	3
eDP	+	no data
DisplayPort	+	-
HDMI	+	-
DVI	+	no data

Graphics image quality

Maximum display resolutions supported by Core i7-6660U and Core i5-11400T integrated GPUs, including resolutions over different interfaces.

4K resolution support	+	+
Max resolution over HDMI 1.4	4096x2304@24Hz	4096x2160@60Hz
Max resolution over eDP	4096x2304@60Hz	5120 x 3200 @60Hz
Max resolution over DisplayPort	4096x2304@60Hz	5120 x 3200 @60Hz

Graphics API support

APIs supported by Core i7-6660U and Core i5-11400T integrated GPUs, sometimes API versions are included.

DirectX	12	12.1
OpenGL	4.5	4.5

Peripherals

Specifications and connection of peripherals supported by Core i7-6660U and Core i5-11400T.

PCIe version	3.0	4.0
PCI Express lanes	12	20

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

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Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

Pros & cons summary

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Performance score	2.32	8.86
Integrated graphics card	3.27	4.16
Recency	20 March 2016	16 March 2021
Physical cores	2	6
Threads	4	12
Power consumption (TDP)	15 Watt	35 Watt

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Should you still have questions on choice between Core i7-6660U and Core i5-11400T, ask them in Comments section, and we shall answer.

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